/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under 
 * the Apache License, Version 2.0  (the "License"); you may not use this file
 * except in compliance with the License.  
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <stdbool.h>

#include "bstrlib.h"

#include "log.h"
#include "assertions.h"
#include "TLVEncoder.h"
#include "TLVDecoder.h"
#include "ServiceReject.h"

int
decode_service_reject (
  service_reject_msg * service_reject,
  uint8_t * buffer,
  uint32_t len)
{
  uint32_t                                decoded = 0;
  int                                     decoded_result = 0;

  // Check if we got a NULL pointer and if buffer length is >= minimum length expected for the message.
  CHECK_PDU_POINTER_AND_LENGTH_DECODER (buffer, SERVICE_REJECT_MINIMUM_LENGTH, len);

  /*
   * Decoding mandatory fields
   */
  if ((decoded_result = decode_emm_cause (&service_reject->emmcause, 0, buffer + decoded, len - decoded)) < 0)
    return decoded_result;
  else
    decoded += decoded_result;

  return decoded;
}

int
encode_service_reject (
  service_reject_msg * service_reject,
  uint8_t * buffer,
  uint32_t len)
{
  int                                     encoded = 0;
  int                                     encode_result = 0;

  /*
   * Checking IEI and pointer
   */
  CHECK_PDU_POINTER_AND_LENGTH_ENCODER (buffer, SERVICE_REJECT_MINIMUM_LENGTH, len);

  if ((encode_result = encode_emm_cause (&service_reject->emmcause, 0, buffer + encoded, len - encoded)) < 0) {  //Return in case of error
    return encode_result;
  } else {
    encoded += encode_result;
  }
  /* Just wait a litle bit for CS...
  if ((encode_result = encode_gprs_timer_ie (&service_reject->t3442value, 0, buffer + encoded, len - encoded)) < 0) {       //Return in case of error
    OAILOG_FUNC_RETURN (LOG_NAS_EMM, encode_result);
  } else {
    encoded += encode_result;
  }*/

  return encoded;
}
